Improvement in compound air-heaters and steam-condensers



attirati 'tudes B. F. STURTEVANT, Oll JAMAICA PLAIN, MASSACHUSETTS.

Letters Patent No. 100,242, dated February 22, 1870.

IMPROVEMENT IN C-OMPOU'ND AIR-HEATERS AND STAM-CONDENSBRS.

The Schedule referred to inv these Letters Patent and making part of the same.

flo all 'whom it may concern:

Be it known that I, B. F. STURTEVANT, of Jamaica Plain, in the county of Norfolk, and State ot` Massachusetts, have invented Improvements in Air-Surface Gondensers; and I do hereby declare that the following, taken in connection withv thedrawings ywhich accompany and form` part of this specication, is a descn'ptiou of my invention suicient to enable those skilled in the art to practice it.

' In that class of apparatus in which currents of air are forced or drawn by the action of a rotary blower through a series of tubes contained in a case, into which tubes steam -is introduced, so as to give up its heat by conduction through the material of thin tubes to the air currents passing through their bores, it is an object ot practical importance to so connect the blower with the condenser that the said two parts can be removably attached, with respect to each other, so that they shall be capable of'easy dismemberment for repairs, cleaning, and transportation, and one part of my present invention relates to such a construction. p Another part relates to such a construction as converts the outside of the tube-case, into which steam is introduced into radiating surface, by which the area of the condensing surface is increased, as a current of air is made to pass around the tube-case, and between it and an outer casing, which contines the air acted on by the blower. A r

And another part of my invention relates to the introduction into `the steam-passages of deflectors to break the force of incoming water.

Figure 1 of' the drawings shows in sectional elevation an apparatus embodying my invention, the Seci tion being taken in the plane of the line z z, seen in Figure 2, which is a plan of my said apparatus.

Ihe case, which contains -the tubes a a, is made-up of a cylinder, la, and two tube-sheets or heads, c c, and

said ease is contained in an outer case, made up of rings d, (having feet e, which are designed to be bolted to a foundation) cylinder f, made in two or more parts, and tunnel-shaped heads g g'. i

On the part bof the steam-case are bolted nozzles, h h', which project through openings made in the cylinder f, the flanges of the nozzles on cylinder b filling the distance trom'b to f, thus supporting the tubular case concentrioally within the cylinder j, which gives au air passage all around the periphery of the tubular case, and allows it to expand and contract freely.

In `the nozzles h h' are tixed 'deiecting-plates i, directly across the inlet and outlet steam-passages, so as to deflect and spread the steam currents to canse them to till the entire space within the tubular drum, around the outside of the tubes, instead of rushing directly through said space fromV nozzle to nozzle by the shortest and most direct passage. t

The direction of the steam-currents is shown by the dotted arrows marked. in lig. 1.

The outer cylinder fis removably attached to the nozzle .flanges and tothe rings d byymeans of screws, and the heads g and f are removably attached to the rings dby means of screws.

The blower j is of a kind well known, and described in Letters Patent of the United States granted to me. It is located at some distance from the head g of the condenser, so as to give room between the blower and condenser for any n eeded operations of a Workman or attendant upon the blower shaft-bearings, or upon the tube ends.

The air-passage between the blower and condenser is made by an encompassing band, k,. of metal, the parts of which are secured together by screws, vso that said band forms an easily removable 'rng,'which fits upon the neck of head g, and a ring formed ou the side of the blower.

For small apparatus I' prefer to connect the blower and condenser by attaching them to a common'foundation or bed-plate to keep .them in proper position relatively to each other; but in large apparatus I use by preference the stay-rods l, dispensing with the bedplate as being then unnecessary, as permanent 'foundations are made to receive-the .weight and stress of the apparatus, and thel stay-rods then only act to prevent the top ofthe blower from swaying, and to determine the relative position of the parts before they are fixed to 'a local permanent foundation.

I have heretofore connected the tube-case directly to one side of the blower, but the arrangement of the said parts at some distance apart, and connecting them with a removable passage-way, k, enables me to keep o neof the blower shaft-bearings and the tube ends adjacent thereto, in repair without changing the.

relative positions of the blower and the tube-case, and thus I save when such operations are required, disconnecting the steam-pipes and one of the air-conveylng pipes.

Though the 'blower is Ishown in the drawings as arranged to draw air through the tubes a, it will be obvious that it mightbe so arranged and operated as to force air through said tubes under myY invention herein set forth.

I claim-- The arrangement of the tube-case b within an aircase, f, so that the air will pass around the tube-case, as well as through -the tubes, substantially as and for the purpose specied.

Also, the tubee'case, attached to and supported by :come

the air-case-by connections located at point-s reinforced Also, the arrangement of the blower and tube-case by the castings between the ends of the tube-case, so separated from each other a fixed distance and having as ou leave the tube-case free to expand and contract between them the removably attached air-pipe, subunder thermal changes. stantially as described.

Also, the ain-case extension, constructed in remov- B. F. STURTEVANT. Aably attaelied parts k and g, to afford easy access to the tuheease, substantially as described. p Witnesses:

Also, a tube-case in the steam-passages of which J.. B. CROSBY, on the periphery are arranged detlectors 1', substan- FRANCIS GOULD.

tially as and for the purpose speclied. 

